Materials
- Basalt (basic igneous rock)68 objects
- Quartzite30 objects
- Chert21 objects
- Sandstone9 objects
- Granite (rock)7 objects
- Slate (rock)7 objects
- Obsidian4 objects
- Quartz (mineral)4 objects
- Acetate film3 objects
- Flint (rock)3 objects
- Hornfels3 objects
- Igneous rock3 objects
- Plate glass3 objects
- Jade (rock)2 objects
- Jadeite2 objects
- Serpentine (mineral)2 objects
- Andesite1 objects
- Lava1 objects
- Nephrite1 objects
- Porphyry1 objects